51554634306 has 48 divisors (see below), whose sum is σ = 121291175520. Its totient is φ = 14564383680.

The previous prime is 51554634281. The next prime is 51554634331. The reversal of 51554634306 is 60343645515.

It is an interprime number because it is at equal distance from previous prime (51554634281) and next prime (51554634331).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 958980 + ... + 1011311.

It is an arithmetic number, because the mean of its divisors is an integer number (2526899490).

Almost surely, 2^51554634306 is an apocalyptic number.

51554634306 is an abundant number, since it is smaller than the sum of its proper divisors (69736541214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51554634306 is a wasteful number, since it uses less digits than its factorization.

51554634306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970399 (or 1970392 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 51554634306 in words is "fifty-one billion, five hundred fifty-four million, six hundred thirty-four thousand, three hundred six".